Follow these steps to configure your Yealink IP Phone for use with Callision:

1. Click "Account" tab.
2. In the "Register Name" field, enter your Username.
3. In the "User Name" input field, enter your Username.
4. In the "Password" field, enter your Password.
5. From the "Transport" drop-down list, select the TCP value.
6. In the "Server Host" field in the "SIP Server 1" section, enter sip.callision.com
7.  In the "Port" field in the "SIP Server 1" section, enter "5068".
8. Click "Confirm" button.

Username and Password can be found in Callision Webphone settings.

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